1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natali 33 [55]
3 years ago
15

Find the mean variance and standard deviation for the number of heads when a coin is tossed 30 times

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Answer:

mean=10*1/2=5

variance=10*1/2*1/2=2.5

standard deviation=sqrt2.5=1.58

Step-by-step explanation: Hope this helps Have a good day :)

You might be interested in
A certain number is both a perfect square root and a perfect cube will its cube root and square root always be different numbers
Murljashka [212]

Answer:

The exception is 1

Step-by-step explanation:

The cube root of 1 is 1, and the square root of 1 is also 1..

hence, 1 has cube root equal to square root

4 0
3 years ago
In the algebraic expression 5x+8y-12z, the values 5, 8, and -12 are
mario62 [17]
They are coefficient 
7 0
3 years ago
Help please? not sure about this
zimovet [89]

9514 1404 393

Answer:

  72 kph

Step-by-step explanation:

The first sentence tells you the speeds are proportional. So, you can write the proportion ...

  kph/mph = 120/75 = x/45

Multiplying by 45 gives x:

  x = (45)(120/75) = 72

72 kph is 45 mph.

8 0
3 years ago
Oliver works 5 days a week. He drives 53 kilometres each day and walks a total of 25 kilometres over the week: He uses the follo
nikklg [1K]
I think it’s 36 but I’m not good at math so don’t count me on it
7 0
2 years ago
Select a number that can complete the equation so that it has no solution. 6(x-7/6)=6x+__
BlackZzzverrR [31]
6(x - \frac{7}{6} ) = 6 x - 7 \\ 6x - 7 = 6x + ( - 7)
The answer is the third option, -7.

Hope this helps.
7 0
3 years ago
Other questions:
  • What two numbers multiply to 85 and add to 18
    5·1 answer
  • Hello! all the people around the world! i need you TO PLS make a random question that is easy OR MY TO ANWSER! IF YOU DO ILL GIV
    11·2 answers
  • Principal is 15000 interest rate is 8.75 simple interest is 5425.00 what is the time
    11·1 answer
  • Choose the inequality that represents the following graph
    7·2 answers
  • At a certain gas station, 40% of the customers use regular gas (A1), 35% use plus gas (A2), and 25% use premium (A3). Of those c
    15·1 answer
  • One Weekend Greg and Darius shoveled snow to earn spending money. Together they earned $12.50 and hour and worked 9 hours. Each
    8·1 answer
  • Timeless Toys Builds tricycles and Wagons. The owner noticed that there are several different ways that a customer could place a
    13·1 answer
  • Darcy gave her beauty technician a ​$5.40 tip. The tip was 12​% of the cost of the procedure. Write an equation to find​ b, the
    9·1 answer
  • Help pls ill award u the brainliest person!!! plsss help nowwww
    6·1 answer
  • A client is withdrawing $105.83. He would like $40 in $10 bills and the rest in the fewest number of bills and coins possible. S
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!